var arg=process.argv[2];

console.log(arg)

var buf1=Buffer.from(arg,"base64");//将buf1编码为base64形式
console.log(buf1)
var str=buf1.toString('utf-8');
var arr=str.split(" ");
var userInfor={"userName":arr[0],"pwd":arr[1]};
console.log(userInfor);